[tlbuild] ptex ini creation seg faults on OpenBSD

[Martin Schröder]

2010/7/20 Peter Breitenlohner <peb at mppmu.mpg.de>:
> may or may not cause a segfault (seems it does so for OpenBSD).

malloc on OpenBSD has some additional options that help finding bugs
in programs, so the problem may well only show on OpenBSD.

Best
   Martin